I assume you have a factory V3 and good SWR or a dummy load attached.? If you don't have a factory V3 this doesn't apply.

Select the CW or CWR mode, set the DRIVE to 100 and then hold the PTT on the mic.? Then while transmitting, slide the speaker volume icon slider up, the Raspberry Pi OS one up in the upper right hand corner of the desktop next to the OS clock, not the sBitx volume.? If you slide that up during transmit does your power level go up to something reasonable?? If yours is like mine was you will have to slide the system volume up during each and every single transmit. If that is your problem, I can tell you what I had to do to fix mine.

Alamogordo Amateur Radio Club Serving Hams In The Tularosa Basin And Around The World And Beyond

AARCs' 38th Annual Hamfest 31 Aug Labor Day Weekend 2024 from 7am to 3pm-ish (depends upon presentations)

Free admissions, donations from local and Ham related vendors for door prize drawings throughout the day

Morning brew and eats by club for donations, for lunch support your local vendors.

Plenty of parking at the Otero County Fairgrounds, RV's welcome but no RV hookups, dump station on site

Hamfest is ARRL approved and small listed nonprofit (needing all the help we can get)

AARC is also looking for items to be donated as door prizes throughout the day

"Give a big thank you to those who donated to our past Hamfests." You keep us afloat

We would like to list your logo on our website to show donor support and advertise your business during the event

Main prizes and Ht drawings are normally purchased by the club, (donations accepted) must be present for all except 1st prize

? ? 1st FT-710 AESS
? ? 2nd FTM-6000R
? ? 3rd Mini 1.3 OLED ZUMspot Kit
? ? 4th DM-30TR
? ?$1.00 Drawing for FT65 HT

Main Prize drawing tickets $8.00 mail in post dated before 24 Aug (eligible for Pre-Registration Prize drawing of $50.00) $10.00 at the door, Swap Tables $15.00 with one chair

Any profits made from our event goes back into paying our bills, insurance, repeater systems maintenance, classes and our other public activities

We are also looking for folks/groups who would like to do short presentations

Testing will be conducted on site around 9am-ish (depends upon the VE and VEC's)

Apologize up front for any doubling up on email requests

Check us out at http://www.qsl.net/k5lrw/ and on FB at Alamogordo Amateur Radio Club NM

Our mails;

KI5RUS Rusty rjaskolo@... ? (2024 AARC Pres and Hamfest Chair)

KB7SQF Rick rick@...

Street mailing address for packages please use;

Russell Jaskolowski
1107 Hendrix Ave
Alamogordo, NM 88310

AARC mail box is;

AARC
Hamfest 2024
12 Main St #383
LaLuz, NM 88337

Rusty's cell 575-491-3631

Thank you all for supporting our small club serving the community

Rick KB7SQF
2024 AARC Director
Hamfest Committee Member
73

Can you post a pic of the back side to show how you cut out for the Heat Sink?
--
'72

For v3, you got the hw_settings.ini with the shipment. If you don't use that, you now learn that the version number hardware settings initialization file cannot be mixed. It's part of the hardware.
--
Gyula HA3HZ

if you copy v2 folder to v3 most you'll definitely get weird power output, as the calibration is different.

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Since your previous question was about that, yes. According to them, you have a v3 that has an IRF510.
If you measure a short on either, replace both.
If you have a measuring instrument, choose two FETs with nearly the same opening voltage.
Before turning on the power again, set the current limit to 2.00 A.
First turn the BIAS potentiometer in the CCW position to GND.

To adjust the quiescent current of the FETs:
SbitX SSB mode, Drive=1, Mic=0 Freq=7035kHz ANT= 50 Ohm 50W dummy load

When the PTT is pressed, the quiescent current consumption during transmission is 0.85A.
This value must be increased by setting the Bias pot to 1.35A.
You need the current-limiting power supply so that you don't destroy the FETs again with the setting.
--
Gyula HA3HZ

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If you are using a non-current-limiting power supply and/or an antenna tuner, it is possible that the output stage fet has failed.
--
Gyula HA3HZ

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You probably forgot to copy the /sbitx/data folder from the previous version.
--
Gyula HA3HZ

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My original case that is too big for Ender 3:


But this was remixed by VE9GJ and split so that it will now fit on an ender 3!


Hope one works for you!

73
Mark

--
AJ6CU/7
KD8CEC 2.0, Nextion Screens,? and open source uBITX Raduino boards for Arduino IOT, BLE, RP2040, Teensy 4.0, and Raspberry Pi Pico
https://github.com/aj6cu

Bravo Jeff!
I will place my order shortly.

Thank you for all of your effort on this update component.

Using SSTV with sBitx radio

Nothing special happened. I only used the sBitx as a radio in USB mode and a laptop running mmsstv YoniQ 1.13.3 on Windows 10.
This is an mmsstv version modified by a Spanish programmer. The sstv program must be installed on the laptop.
And the sound card is a small card using USB CM108, which wb2cba described in another topic.
The sound card creates the ptt path, but it requires maximum volume from the laptop to work properly.
MMSSTV YoniQ link:
WB2CBA sound card:

I think that decoding sstv requires a well-functioning external cpu, the RPi would not be able to do that.
When I took the images, the whole screen would often go black while correcting the sync and redrawing the image. In some pictures, the mode selection is incorrect.
I did 14 qso's with 20 watts here in Europe.
I was a little nostalgic because I built my first sstv receiver converter 39 years ago. (G3WCY rx, then 2 years later G4ENA tx converter). I tried to use the previously used MMSSTV templates, some modifications had to be made.

Important note: use this mode for broadcasting only at your own risk! For me, sBitx works with several modifications, so it is important to cool the heat-producing components during the 110-120 second broadcast. It's also a good idea to monitor the RPi's CPU temperature, as W9JES did on the 64-bit system. Use the power supply with current limitation. For me, it is limited to 6.0 Amps, and only after 4,000 QSOs did I increase the current draw to 6.3 A (+5%).


The first picture I took with this composition.


Later I synchronized the clock signal of the sound card.


I am currently using sBitx with these modifications.


Preparing the USB sound card.

--
Gyula HA3HZ

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